cxxviii 
INTRODUCTION. 
346. OlDEMIA FUSCA Vol. V. PI. XXIX. 
Velvet Scoter. 
A common winter bird in the Orkney and Shetland Islands ; solitary individuals have been killed on the 
Thames and even further south 
347. OlDEMIA perspicillata Vol. V. PI. XXX. 
Surf-Scoter. 
Quite an accidental visitor from the coasts of North America; has been killed about ten times in Britain. 
Genus Clangula. 
The Golden-eye, Barrow’s Duck, and the Buffle-headed Duck are about the only members of this genus ; 
like several of the preceding forms they seek their food at the bottom of the shallow parts of the seas, the 
inlets of rivers, &c. 
348. Clangula glaucion ........... Vol. V. PI. XXXI. 
Golden-eye. 
A true winter visitant, said to have once found a breeding-place on Loch Assynt in Sutherland. Breeds 
in Lapland. 
349. Clangula albeola. 
Buffle-headed Duck. 
This American bird having been killed four or five times in England, some have included it in our avifauna 
lists ; and so do I, hut without figuring it. 
Genus Histrionicus. 
The fantastically marked Harlequin Duck is the type and only known species of this genus. 
350. Histrionicus torquatus Vol. V. PI. XXXII. 
Harlequin Duck. 
A very rare visitant to Britain ; and when examples do occur, they are either females or young males of 
the first year. 
Genus Harelda. 
A northern form of a single species. 
